Windows 10 Insider Preview Build History Tracker

UPDATED 11/18/21: As part of the Windows 10 development, Microsoft has the Windows Insider Program, a testing program that allows developers, businesses, and enthusiasts to access early builds of the operating system to test new features and changes and validate software and drivers before deployments. In this guide, you can track the history of every Windows 10 Insider Preview build for PC, including information about their release date, changelog summary, build number, and more.

The program includes three readiness levels (also known as channels). The Dev Channel (formerly Fast ring) is for highly technical users since builds are rough and contain code that is still under heavy development. Usually, these builds are not stable, you’ll come across errors and problems, and you may have to use workarounds to fix problems that may affect your experience.

Also, previews in this channel are not attached to any specific release of Windows 10, which means that changes will be integrated into future releases when they’re ready and not necessarily in the next feature update. Furthermore, when some improvements are ready, they could arrive as a build update or servicing release.

The Beta Channel (formerly Slow ring) is for anyone who wants to test upcoming features or needs to validate apps and deployments. Previews in this channel are stable, but you may still run into issues. Also, features included in this channel are expected to ship with the next release of Windows 10.

Finally, the Release Preview Channel (formerly Release Preview ring) offers the final build of the next version of Windows 10 before it’s available to the public, with advanced quality updates and certain key features.

If you have a device enrolled in any of these channels, you can use this guide to track the history of every released Windows 10 Insider Preview build.

• Windows 10 21H2 Insider Preview build history
• Windows 10 21H1 Insider Preview build history
• Windows 10 20H2 Insider Preview build history
• Windows 10 version 2004 Insider Preview build history
• Windows 10 version 1909 Insider Preview build history
• Windows 10 version 1903 Insider Preview build history
• Windows 10 version 1809 Insider Preview build history
• Windows 10 version 1803 Insider Preview build history
• Windows 10 version 1709 Insider Preview build history
• Join Windows Insider Program
• Switch Windows Insider Program channel
• Stop Windows Insider Preview builds

Windows 10 21H2 Insider Preview build history

Windows 10 21H2 is the eleventh feature update expected to arrive in the fall of 2021. Some of the features and changes planned for this new version are already available through the Dev Channel.

Below you’ll find the history of the Windows Insider Preview builds released in the Dev Channel. The latest version available for testers is Windows 10 build 19044.1381.

Although Microsoft hasn’t shared any official details, it’s expected that the company will skip the 21H1 update schedule and release version 21H2 during the fall of 2021 instead.

Windows 10 21H1 Insider Preview build history

Windows 10 21H1 is the eleventh feature update expected to arrive in the spring of 2021. This refresh will be considered a minor release with a small set of features and several fixes that will be delivered as a quick enablement package for version 2004 or 20H2.

Below you’ll find the history of the Windows Insider Preview builds released in the Beta Channel. The latest version available for testers is Windows 10 build 19043.1381.

Check out all the features and changes coming to Windows 10 21H1.

Windows 10 20H2 Insider Preview build history

Windows 10 20H2 (October 2020 Update) is the tenth feature update expected to release in October 2020. Below you’ll find the history of the Windows Insider Preview builds released in the Beta Channel (formerly Slow ring). The latest version available for testers is Windows 10 build 19042.1023.

Check out all the new features and changes expected to arrive in Windows 10 20H2.

Windows 10 version 2004 Insider Preview build history

Windows 10 version 2004 (May 2020 Update) — also known as the 19H1 update — is the ninth feature update released on May 21, 2019. Below you’ll find the history of the Windows Insider Preview builds released in the Fast, Slow, and Release Preview rings. The latest version available for testers is Windows 10 build 19041.264.

Check out all the features and changes coming to Windows 10 version 2004 (20H1).

Windows 10 version 1909 Insider Preview build history

Codenamed 19H2, Windows 10 version 1909 (November 2019 Update) was the eighth next major update released on November 12, 2019, as a cumulative update with new features and changes. Below you’ll find the history of the Windows Insider Preview builds released in the Fast, Slow, and Release Preview rings. The latest version available for testers is Windows 10 build 18362.10024 (Slow ring). If you’re in the Release Preview ring, the version number is Windows 10 build 18363.418.

Windows 10 version 1903 Insider Preview build history

Codenamed 19H1, Windows 10 version 1903 (May 2019 Update) was the seventh major update released on May 21, 2019. Below you’ll find the history of the Windows Insider Preview builds released in the Fast, Slow, and Release Preview rings. The latest version available to Insiders in the Fast ring is Windows 10 build 18362 and build 18362.30 in the Slow ring. On April 8, 2019, Microsoft is making available Windows 10 build 18362.30 as the final version for the May 2019 Update in the Release Preview ring.

Check out all the features and changes coming to Windows 10 19H1.

Windows 10 version 1809 Insider Preview build history

Dubbed Redstone 5, Windows 10 version 1809 (October 2020 Update) was the sixth major feature update released on November 13, 2018. Below you’ll find the history of the Windows Insider Preview builds released in the Fast, Slow, and Release Preview rings. The latest version available to Insiders in the Fast ring is Windows 10 build 17763 and build 17763 in the Slow ring.

Windows 10 version 1803 Insider Preview build history

Version 1803 (April 2018 Update) was the fifth feature update of Windows 10 released on April 10, 2018. Below you’ll find the history of the Windows Insider Preview builds released in the Fast, Slow, and Release Preview rings for the Redstone 4 update development. The latest version available to Insiders is Windows 10 build 17134.

Windows 10 version 1709 Insider Preview build history

Windows 10 version 1709 (Fall Creators Update), internally known as Restore Store 3, was the fourth feature update. You’ll find this history of all previews available for this release before it became available to everyone in the table below. The currently available version is Windows 10 build 16299.15 for PC and Windows 10 Mobile build 15254.1 (Windows 10 Mobile Fall Creators Update candidate) for phones.

If you don’t know the version of Windows 10 your PC is running, you can use this guide to determine exactly the version of the operating system installed on your device.

Join Windows Insider Program

On Windows 10, using the Settings app, you can join your device into any of the three testing changes to get early access to new features and enhancements.

To join the Windows Insider Program, use these steps:

• Open Settings.
• Click on Update & Security.
• Click on Windows Insider Program.
• Click the Get started button.
• Join the Windows Insider Program button
• Click the Link an account button.
• Link an account option
• Sign in with your Microsoft account.
• Click the Continue button.
• Under the “Pick your Insider settings” section, select the previews you want to test, including:
• Dev Channel — Includes new features as soon as they’re ready, but builds are not stable.
• Beta Channel — Includes new features and enhancements expected for the next version of Windows 10. The previews are more stable, but you may still run into issues.
• Release Preview Channel — Includes the final version of Windows 10, minus some quality updates.
• Click the Confirm button.
• Select Insider channel
• Click the Confirm button to agree to terms and conditions.
• Click the Restart button.
• Open Settings after the reboot.
• Click on Update & Security.
• Click on Windows Update.
• Click the Check for updates button.
• Windows 10 Insider Preview build download
• Click the Restart button.

Once you complete the steps, the latest preview build of Windows 10 available in the channel you selected will download and install on your computer.

Open Settings.

Click on Update & Security.

Click on Windows Insider Program.

Click the Get started button.

Join the Windows Insider Program button

Click the Link an account button.

Link an account option

Sign in with your Microsoft account.

Click the Continue button.

Under the “Pick your Insider settings” section, select the previews you want to test, including:

• Dev Channel — Includes new features as soon as they’re ready, but builds are not stable.
• Beta Channel — Includes new features and enhancements expected for the next version of Windows 10. The previews are more stable, but you may still run into issues.
• Release Preview Channel — Includes the final version of Windows 10, minus some quality updates.

Click the Confirm button.

Select Insider channel

Click the Confirm button to agree to terms and conditions.

Click the Restart button.

Open Settings after the reboot.

Click on Windows Update.

Click the Check for updates button.

Windows 10 Insider Preview build download

Switch Windows Insider Program channel

You can always switch between channels to test different builds, but you can’t roll back to the current version of Windows 10 without reinstallation.

To switch Insider channels, use these steps:

• Open Settings.
• Click on Update & Security.
• Click on Windows Insider Program.
• Under the “Pick your Insider settings” section, select the active Insider channel – for example, Dev Channel.
• Windows Insider Preview settings
• Select a different Insider channel of Windows 10.
• Switch Insider Preview Channel on Windows 10
• Restart your device.
• Open Settings after the reboot.
• Click on Update & Security.
• Click on Windows Update.
• Click the Check for updates button.
• Click the Restart button.
• After you complete the steps, the new build from the active channel you selected will download and install on the device.
• Stop Windows Insider Program builds

Although you can’t roll back to the current release of Windows 10 (unless you perform a clean installation), you can use an option to opt-out of the program, which will continue to download Insider builds. However, once the final version is released, the device will gracefully be removed from the program.

Under the “Pick your Insider settings” section, select the active Insider channel – for example, Dev Channel.

Windows Insider Preview settings

Select a different Insider channel of Windows 10.

Switch Insider Preview Channel on Windows 10

Restart your device.

After you complete the steps, the new build from the active channel you selected will download and install on the device.

Stop Windows Insider Program builds

Stop Windows Insider Preview builds

To stop getting Insider builds of Windows 10, use these steps:

• Open Settings.
• Click on Update & Security.
• Click on Windows Insider Program.
• Under the “Stop getting preview builds” section, turn off the toggle switch for the setting.
• Opt-out Windows 10 Insider Program

Once you complete the steps, the device will no longer receive Insider builds once the final version is installed.

Under the “Stop getting preview builds” section, turn off the toggle switch for the setting.

Opt-out Windows 10 Insider Program

Originally published in October 2020, information has been updated in Novmeber 2021, and it’ll be kept updated as new releases become available.